From d929288e4d82810b6f697de21c455a2413f23a17 Mon Sep 17 00:00:00 2001
From: Eric Kooistra <kooistra@astron.nl>
Date: Wed, 23 Dec 2020 16:49:06 +0100
Subject: [PATCH] Added c_complex_mult_variant to also support input data that
is wider than 18b.
---
libraries/dsp/st/src/vhdl/st_calc.vhd | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libraries/dsp/st/src/vhdl/st_calc.vhd b/libraries/dsp/st/src/vhdl/st_calc.vhd
index d2f51499b5..e3a884863f 100644
--- a/libraries/dsp/st/src/vhdl/st_calc.vhd
+++ b/libraries/dsp/st/src/vhdl/st_calc.vhd
@@ -82,6 +82,8 @@ END;
ARCHITECTURE str OF st_calc IS
+ CONSTANT c_complex_mult_variant : STRING := sel_a_b(g_in_dat_w <= c_dsp_mult_w, "IP", "RTL");
+
CONSTANT c_mux_w : NATURAL := true_log2(g_nof_mux);
CONSTANT c_adr_w : NATURAL := c_mux_w+g_out_adr_w; -- = = ceil_log2(g_nof_mux*g_nof_stat)
@@ -193,7 +195,7 @@ BEGIN
mul: ENTITY common_mult_lib.common_complex_mult
GENERIC MAP (
g_technology => g_technology,
- g_variant => "IP",
+ g_variant => c_complex_mult_variant,
g_in_a_w => in_ar'LENGTH,
g_in_b_w => in_br'LENGTH,
g_out_p_w => mult_re'LENGTH,
--
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